FreeCalypso > hg > freecalypso-sw
view gsm-fw/lldbg/serio.S @ 922:fb3f04a62f71
fc-loadtool: flash program-bin now performs a CRC-32 verification
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
---|---|
date | Mon, 19 Oct 2015 04:10:34 +0000 |
parents | f5affe83ba2d |
children |
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#include "../include/config.h" #include "ns16550.h" /* this module implements the elementary serial I/O operations */ .text .code 32 .globl lldbg_serial_out lldbg_serial_out: ldr r2, =CONFIG_LLDBG_UART_BASE 1: ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_THRE beq 1b strb r0, [r2, #NS16550_THR] bx lr .globl lldbg_serial_in_poll lldbg_serial_in_poll: ldr r2, =CONFIG_LLDBG_UART_BASE ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_DR ldrneb r0, [r2, #NS16550_RBR] mvneq r0, #0 bx lr #if 0 // not needed currently .globl lldbg_serial_flush lldbg_serial_flush: ldr r2, =CONFIG_LLDBG_UART_BASE 1: ldrb r3, [r2, #NS16550_LSR] tst r3, #NS16550_LSR_TEMP beq 1b bx lr #endif